Federer took his head-to-head against Berdych to 19-6 after a straight-sets win in the quarter-finals of the Australian Open.

The Swiss legend, who is looking to retain his Australian Open crown, will face South Korea’s Hyeon Chung next in the last four.

Federer is now widely considered the hot favourite to clinch his 20th Grand Slam title in Melbourne, especially with long-term rival Rafael Nadal out of the picture.

The 36-year-old has been very fortunate to stay pretty much injury-free throughout his career.

And Berdych doesn’t think much has changed with regards to Federer over the past 12 months.

“I don't know. Maybe he has a couple more grey hairs!," he said.

“I don't know. I mean, guys, I'm not an analyst of Roger's game.

“Yes, he's playing well. I mean, he has definitely, especially with what's happening in the draw, a very good chance to win another title.”

When Berdych was asked what positives he can take out of the tournament, he added: “It's a lot of them. I mean, it was a great tournament overall. 

“It's another quarterfinal. But as I said, my goal was to play some good tennis. 

“On court, that's what I had.”